Personally, I want advertisers to have as much information about me as they can, as long as they use it so they can serve ads with the most relevancy possible.

Personally, I want advertisers to have as much information about me as they can, as long as they use it so they can serve ads with the most relevancy possible. If I have to look at ads (a necessary evil in the current market in many contexts), I want the ads to be for something I'm interested in so the ads become closer and closer to 'content' rather than ads.